Nokia NSE-1 Series Installation instructions

NSE–1 Series Transceivers
PAMS Technical Documentation
Original 03/98
Disassembly &
Troubleshooting
Instructions

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 2 Original 03/98
CONTENTS
Page No
Disassembly 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trouble Shooting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is totally dead 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming doesn’t work 6. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (1) 8. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (2) 9. . . . . . . . . . . . . . . . . . . . . . .
Power doesn’t stay on, or phone is jammed 10. . . . . . . . . . . . . .
Display Information: Contact Service 11. . . . . . . . . . . . . . . . . . . .
The phone doesn’t register to the network or phone doesn’t make a call 11
Phone register failure 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM card is out of order 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM Card failure 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (1) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (2) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charger failure 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (1) 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (2) 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (3) 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (4) 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (5) 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (6) 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (7) 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (1) 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (2) 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (3) 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 3
Original 03/98
Disassembly
Remove battery
Remove dust cap by fingernail
Remove back cover
screws (4 pcs) Remove C–cover
Carefully remove A–cover
Note snap fixings !
Press strongly towards
arrow direction

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 4 Original 03/98
Remove UI–module
screws (2 pcs)
Remove UI–module
and frame
Remove engine
module screw (1 pc)
Remove RTC–battery
Remove microphone
Remove engine module
Remove antenna by
pulling it straight out

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 5
Original 03/98
Trouble Shooting
The following hints should facility finding the cause of the problem when
the circuitry seems to be faulty. This trouble shooting instruction is di-
vided following section.
1. Phone is totally dead
2. Flash programming doesn‘t work
3. Power doesn‘t stay on or the phone is jammed
4. Display information: Contact Service
5. Phone doesn‘t register to the network or phone doesn‘t make a call.
6. Plug in SIM card is out of order ( insert SIM card or card rejected).
7. Audio fault.
8. Charging fault
The first thing to do is carry out a through visual check of the module. En-
sure in particular that:
a) there are not any mechanical damages
b) soldered joints are OK

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 6 Original 03/98
Phone is totally dead
This means that phone doesn’t take current at all when the power switch
is pressed or when the watchdog disable pin (N100 pin 29) is grounded.
Used battery voltage must be higher than 3.0 V. Otherwise the hardware
of CCONT (N100) prevents totally to switch power on.
Phone is totally dead
YES
Check R118, X300
J232
VBAT is 3.6 V NO Failure in VBAT line
Check X101, X102, L103
YES
Voltage at pin 29 of CCONT (N100)
is 3.6 V
NO Faulty circuit N100
YES
N100 pin 55 (VBB) 2.8 V
N100 pin 25 (VXO) 2.8 V
when PWR switch is pressed
or watchdog disable pin is grounded
NO CCONT (N100) pin 29 0V
when PWR switch is pressed
YES
See section: Power Doesn’t Stay On
YES
Faulty circuit N100
NO
Check UI module
Flash programming doesn’t work
In service places flash programming can be done via system connector
X100.
In flash programming error cases the flash prommer can give some in-
formation about a fault.
The fault information messages could be:
– MCU doesn’t boot
– Serial clock line failure
– Serial data line failure
– External RAM fault
– Algorithm file or alias ID don’t find
– MCU flash Vpp error
In cases that the flash programming doesn’t succeed there is a possibility
to check short circuits between the memories and the MCU (MAD2).
This test is useful to do, when the fault information is: MCU doesn’t boot,
Serial clock line failure or Serial data line failure.

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 7
Original 03/98
The test procedure is following:
1. Connect the short circuit wire between the test points J229 and J230.
2. Switch power on
3. If the voltage level in testpoint J225 is 2.8 V (”1”), the interface is OK. If
there is a short circuit, the voltage level in testpoint J225 stays low and
32kHz square wave signal can be seen in the lines which are al-
ready tested.
One must be noticed that this test can be found only short circuits, not
open pins.
Also upper data lines (15:8) of flash circuit D210 are not included to this
test.
CCONT pin 54( PURX )
MAD pin 38 ( MCUAD0)
MAD pin 134 ( ExtSysResX))selftest
passed J225

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 8 Original 03/98
Flash Programming failure (1)
Flash programming doesn’t work
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V NO
YES
J227 master reset (Purx) = ”1” (2.8 V) NO J228 sleep clock(SCLK)
square wave 32 kHz NO
YES
Faulty circuit N100
or over loaded PurX line
check sleep
clock circuitry
(B100, R154...)
YES
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
NO
J506 (RFC) 13 MHz
800 mV min
YES
check C213, R213
NO
check buffer V705 and
VCXO G600 Check that following lines are correct:
YES
If the fault information from the prommer is:
b) serial data line failure
a) MCU doesn’t boot
c) serial clock line failure
connect:
FCLK (MBUS) line: X100 pin 11 –> D200 pin 112
FTX (fbus_tx) line: X100 pin 13 –> D200 pin 104
FRX (fbus_rx) line: X100 pin 12 –> D200 pin 109
check also pullup and pulldown resistors: R203, R201, R215
OK
GND : X100 pin 14 –> GND
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
N100 is faulty
OK
Enable the selftest function of D200 by connecting
shortcircuit between testpoints J229 and J230
Connect an oscilloscope to testpoint J225 and switch
power on
Voltage level rises to ”1” after power on at testpoint J225 NO
YES
There is a shortcircuit
somewhere in memory control
lines or MCU address lines or
MCU lower (7:0) data lines
There could be open pins in circuits D200 (D211, D240)
If not, the PCB or D200 (D211, D240) is faulty
VBAT is correct
3.6 V
YES

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 9
Original 03/98
Flash Programming failure (2)
Flash progrmming doesn’t work
YES
Faulty component D210
If the fault information from the prommer is:
External RAM fault
YES
Check pins of SRAM (D220)
Check control lines of SRAM:
RAMSelX ...
Flash progrmming doesn’t work
YES
If the fault information from the prommer is:
Algorithm file or alias ID don’t find, ID is un-
known etc.
YES
Check control lines and upper data lines (15:8)
of FLASH: ROM1SelX...
Check pins of FLASH (D210)
Flash progrmming doesn’t work
YES
If the fault information from the prommer is:
MCU flash Vpp error
YES
Vpp = 3 V in D210 pin 13 (or C212)
Check components C212, R211
YES
NO Vpp > 4.5 V in testpoint J234
YES
NO
Check UI regulator N201
Check regulator N100
C132, V116, C131
OK

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 10 Original 03/98
Power doesn’t stay on, or phone is jammed
If this kind of fault has come after flash programming, there are most
probably open pins in ICs.
The soldered joints of ICs: D200 (MAD2), D210 (FLASH), N100
(CCONT), D221 (SRAM) are useful to check at first.
Normally the power will be switched of by CCONT (N100) after 30 se-
conds, if the watchdog of the CCONT can not be served by software.
The watchdog updating can be seen by oscilloscope at pin 50 (DataselX)
of CCONT.
In normal case there is a short pulse from ”1” –> 0 every 8 seconds.
The power off function of CCONT can be prevented by connecting a short
circuit wire from CCONT pin 29 to ground.
Power doesn’t stay on or phone is jammed
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V NO
YES
J227 master reset (Purx) = ”1” (2.8 V) NO J228 sleep clock(SCLK)
square wave 32 kHz NO
YES
Faulty circuit N100
or over loaded PurX line
check sleep
clock circuitry
(B100, R154...)
YES
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
NO
J506 (RFC) 13 MHz
800 mV min
YES
check C213, R213
NO
check buffer V705 and
VCXO G600
YES
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
N100 is faulty
OK
VBAT is correct
3.6 V
YES
CCONT watchdog is served?
(pin 50 pulses 1 –> 0)
NO
YES
software is able to run
check UI module
after few seconds, check
BSI and BTEM lines
If power is switched off
Open pins or faulty circuit:
D200, D210, D221, N100
R215

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 11
Original 03/98
Display Information: Contact Service
This fault means that software is able to run and thus the watchog of
CCONT (N100) can be served.
Selftest functions are run when power is switched on and software is
started to excute from flash.
If any of selftests is failed, contact service information will be shown on
display.
The phone doesn’t register to the network or phone
doesn’t make a call
If the phone doesn’t register to the network or the phone doesn’t make a
call, the reason could be either the baseband or the RF part.
The phone can be set to wanted mode by WinTesla service software and
determinate if the fault is in RF or in baseband part (RF interface mea-
surements).
The control lines for RF part are supplied both the System Asic
(MAD2;D200) and the RFI (Cobba; N250). MAD2 handles digital control
lines ( like synthe, TxP etc.) and Cobba handles analog control lines (like
AFC, TxC etc.).
The DSP software is constructed so that operation states of DSP (MAD2)
can be seen in external flag (DSPXF) output pin (D200 pin 91).
After power up, DSP signals all completed functions by changing the state
of the XF pin (see figures 39 and 40).
MAD2 pin 91 (DSPXF)
1 2 3
1. DSP initialization done
2.Synchronization to network
done
3. Registrarition to network
done.
J222

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 12 Original 03/98
1
2
3
MAD2 pin 91 (DSPXF)
J222
MAD2 pin 91 (DSPXF)
J222
MAD2 pin 91 (DSPXF)
J222
init
initialize patch code download
dsp
constants
download
initialization
done
synchronization
OK
channel
scan starts
PSW
search last PSW
OK
send RACH
RACH OK
go SDCCH
imediate assigment
OK

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 13
Original 03/98
Phone register failure
Phone doesn’t register to the network
or
phone doesn,t make a call
YES
Analog supply voltage VCOBBA is >2.7 V
at pin 7,12 ... of Cobba (N250)
NO
YES
Check
N100
Analog reference voltage Vref is 1.5 V
at pin 9 of Cobba (N250)
NO Check
R270, R271
YES
Supply voltage VCP (N100 pin 32) > 4.8 V
Supply voltage VRX (N100 pin 9) > 2.7 V
Supply voltage VSYN_1 (N100 pin 15) > 2.7 V
Supply voltage VSYN_2 (N100 pin 4) > 2.7 V
during the receiving slot
Supply voltage VTX (N100 pins 11, 20) > 2.7 V
during the transmitting slot
YES
NO Check
N100, D200
Synthesizer lines: SEna (N620 pin 56),
SClk (N620 pin 54)
SData (N620 pin 55)
pulses 0 –> 1 during receiving slot
NO Check
D200
YES
RF control lines: RxC (N250 pin 18) 0 –> 2.3 Vmax during receiving slot
AFC (N250 pin 19) 0 – 1.2 V typ. during receiving slot
NO Check
N250
YES
Analog data signal RxIP (N250 pin 22) 0–> 1.5 V DC during receiving slot
Analog data signal RxIN (N250 pin 22) 0–> 1.5 V DC during receiving slot
Used benefit signal is biased to DC and its amplitude is 50 mVpp
nominal and frequency is 13 MHz
NO Check
N250 if DC is failed
Check
RF part if benefit signal is failed
YES
DAX signal (N250 pin 48) pulses 1 –> 0 during receiving slot NO Check
N250
RF control lines: TxC (N250 pin 17) 0 –> 2.3 Vmax during transmit slot
TxP (D200 pin 176) 0–>1 (2.8 V) during transmit slot
YES Check
N250 if TxC is failed
Check
D200 if TxP is failed
NO
YES
Analog data signals: TxIN (N250 pin 13) 0–> 0.8 V DC during transmit slot
TxIP (N250 pin 14) 0 –>0.8 V DC during transmit slot
TxQN (N250 pin 15) 0 –>0.8 V DC during transmit slot
TxQP (N250 pin 16) 0 –>0.8 V DC during transmit slot
Used benefit signal is biased to DC and its amplitude is 300 mVpp
nominal and frequency is 67 kHz
NO Check
N250
YES Check
RF part

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 14 Original 03/98
SIM card is out of order
The hardware of the SIM interface from MAD2 (D200) to the SIM connec-
tor (X302) can be tested without SIM card.
When the power is switched on and if the BSI line (X101;1) is grounded
by resistor, all the used lines (VSIM, RST, CLK, DATA) rises up to 5 V four
times. Thus ”Insert SIM card” faults can be found without SIM card.
The fault information ”Card rejected” means that ATR message (the first
message is always sent from card to phone) is sent from card to phone
but the message is somehow corrupted, data signal levels are wrong etc.
or factory set values (stored to the EEPROM) are not correct.

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 15
Original 03/98
SIM Card failure
Insert SIM card fault
Voltage level < 1.5 V
at pin 95 of D200 when
YES
NO Check
R120, R122, X101
C120, C160
YES
BSI resistor is connected
VSIM, DATA, RESET and CLOCK lines
rises up to 5 V after power on at pins
of SIM card
NO
YES Check
SIM card and SIM reader
connectors
VSIM(36), DATAO(43),SIMRSTO(42) and SIMCLKO(38) lines
rises up to 5 V after power on at pins of N100 (CCONT)
NO
YES Check
X302, R124, R125, R128
SIMPWR(30), DATAA(44), SIMRSTA(40), SIMCLK(41) and SIMIOC(39) lines
rises up to 2.8 V after power on at pins of N100 (CCONT) YES faulty circuit
N100 (CCONT)
NO
SIMCardPwr(129), SIMCardData(120), SIMCardRstX(127), SIMCardClk(126) and SIMCardIOC(128) lines
rises up to 2.8 V after power on at pins of D200 (MAD2)
NO
YES faulty PCB
Check again that voltage level at pin 95 (SIMCardDetX) of D200 is lower than 1.5V
If it is, change D200
Card Rejected fault
YES
VSIM is according the specification
VSIM = 2.8 V min (with 3 V SIM card)
VSIM = 4.5 V min (with 5 V SIM card)
NO faulty circuit
N100 (CCONT)
YES
The ATR data can be seen at pin 43
(CCONT, N100)
NO Check
X302, R124
YES
The ATR data can be seen at pin 120
(MAD2, D200) NO Check
N100
YES
SIMIOControl line (N100 pin 36) is ”1”
during the ATR message
NO Check
D200
YES
Check D200

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 16 Original 03/98
Audio failure (1)
Uplink (microphone) and downlink (earphone) are broken
Voltage at pin 107 of MAD2 (D200)
is 2.8 V (without external audio de-
vices) HOOKDET
NO
YES
Check
R259, R260
Voltage at pin 108 of MAD2 (D200)
is 2.8 V (without external audio de-
vices) HEADDET
NO Check
R257, R256, R261
YES
Frequency at pin 138 of MAD2 (D200)
is 1 MHz, square wave 2.8 Vpp
NO Check
N250 (Cobba)
Frequency at pin 139 of MAD2 (D200)
is 8 kHz, square wave pulses 2.8 Vpp
YES
NO Check
N250 (Cobba)
Uplink (microphone) is broken
Voltage at pin 6 of X100 is 1.8 V
Voltage at pin 7 of X100 is 0.3 V NO
YES Check
microphone, X100 and micbias
components V250...
If OK, check that micbias control line
is (D200 pin1 ) 2.8 V during a call
during a call
YES
DC voltage at pins 59 and 60 of
N250 is 1.4 V during a call
NO Check
N250 (Cobba)
YES
Analog audio signal (few millivolts) at pins 59 and 60
of N250 during a call NO Check
C262, C263 and PCB
routings
YES
Check
N250 (Cobba)
Digital PCM data at pin 137 of MAD2 (D200)
during a call NO
YES

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 17
Original 03/98
Audio failure (2)
Check
D200 (MAD2)
Digital PCM data at pin 52 of Cobba (N250)
during a call NO
Downlink (earphone) is broken
YES
YES
DC voltage at pins 5 and 6 of
N250 is 1.4 V during a call
NO Check
N250 (Cobba)
YES
Analog audio signal (some ten millivolts) at pins 5 and
6 of N250 during a call
NO Check
N250 (Cobba)

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 18 Original 03/98
Charger failure
YES
Nothing happens when charger is connected
Voltage level at pin 60 of CCONT (N100)
is higher than 0.4 V when charger is con-
nected
NO Check
X100, F100, L104
R104, R103
YES
Check N100
Display Information: Not charging
YES
Voltage level at pin 62 of CCONT (N100)
is about 0.8 V when power is connected
BSI resistor value should be 39 k
NO Check
X101, R120, R122
YES
Voltage level at pin 63 of CCONT (N100)
is about 0.5 V when power is connected
BTEMP resistor value should be 47 k
NO Check
X101, R120, R122
YES
32 Hz square wave frequency at pin 7 of CHAPS (N101) NO Check
N100
Check
N101
YES
Voltage levels at pins 5 and 12 of CHAPS (N101)
are same as VB
NO Check
R131, N101
YES
Voltage levels at pins 5 and 12 of CHAPS (N101)
rises when charger is connected
NO

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 19
Original 03/98
Receiver Fault (1)
Duplexer ant–pin, SL: –58 dBm Loading between X540 pin 1
and 2 ~ 0 ΩChange X540
Check soldered joints of X540
and Z550, check also that X540
is assembled correct, if OK
Change Z550
N500 pin 25, SL: –61 dBm
N500 pin 25,
loading > 1 M Ω
Check C506, if OK
change N500
Change duplexer Duplexer Rx–pin, SL: –61 dBm
N500 pin 23, SL: –38 dBmN500 pin 26 is ”HIGH”
N500 pin 26,
loading > 1 M Ω
Check PDATA0–line
for short circuits
N500 pin 17 and 19, 2.8V
Check PDATA0–line
D200 pin 171
Check VRX(J510) and
VSYN_1(J516) lines
from CCONT
Check VREF_2(J518)
voltage line
Check soldered joints of N500 and R504, if OK change R504
Check components in line out
of pin 23, if OK change N500 N500 pin 23, loading 10 k Ω
N500 pin 16, 1.5V
N500 pin 20, loading 10 k Ω
Z500 input, SL: –44 dBm Z500 input, loading > 1 MΩCheck soldered joints,
if OK change Z500
Check C500 soldered joints,
if OK change it
Z500 output, SL: –47 dBm Z500 output,
loading > 1 M ΩCheck C518, C504,
if OK cange Z500
Change Z500
N500 pin 7 and 8, SL: –57 dBm Check soldered joints of C516,
C520 check internal coils
N500 pin 7 and 8,
loading 50 Ω
Rise up N500
pin 7,8. If level
back to normal
change N500
Change N500
1st IF
71 MHz
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO
YES YES YES
YES YES
YES
YES
YES
NO
YES YES
YES
YES YES YES
YES
NO
Receiver
Fault
YES

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 20 Original 03/98
Receiver Fault (2)
1st IF
71 MHz
N500 pin 12,
1018 MHz SL: –28 dBm G530 Out, 1018 MHz
SL: –28 dBm
Check connections from G530
to N500 pin 12
UHFLO
N500 pin 9 and 10,
SL: –28
N500 pin 6, 2.8V
Check VRX(J510) and
soldered joints
Check R504
Rise up 9 and 10, if loading
OK at pads change N500
N500 pin 15,
loading 10 k Ω
N500 pin 9 and 10,
loading 10 k Ω
Change N500
Z621 input 1 and 2,
SL: –30 Z621 input 1 and 2,
loading > 1 M Ω
Check input for
short circiuts, if
OK change
Z621
Check components in input
line to Z621
Z621 output,
SL: –43
Z621 ouput 1 and 2,
loading > 1 M Ω
Check output
for short
circiuts, if OK
change Z621
Check components in
output line. Check soldered
joints at N620, if OK
change Z621
N620 pin 51(J530) and
52(J532), SL: –43
N620 pin 47, 2.8V
Check soldered joints
of N620
N620 pin 51 and 52,
DC–level ~1.7V
N620 pin 51 and 52,
loading 5 k Ω
Change N620
Check N620 pin 51 and
52 for short circuit
2nd IF
13 MHz
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES